520 



NATURE 



[August 28, 1919 



the rectum instead of into anal vesicles ; (4) the ovary 

 is restrioted to the extreme posterior end, and is 

 transversely situated ; (5) presence of a well-defined 

 siphon associated with the anterior part of the intes- 

 tine, with which it communicates by means of a 

 greatly folded region ; (6) the presence of a distinct 

 invagination of the body-wall between uterine open- 

 ings (in this invagination, which the authors call the 

 male tube or androecium, a tiny degenerate male is 

 lodged) ; (7) though the female possesses from two to 

 four ventral hooks, the male is devoid of them ; 



(8) the presence of two vesiculae seminales; and 



(9) the partial fusion of the male with tho female, its 

 posterior end being more or less enveloped by the 

 tissues of the androecium, so that there is a very 

 pronounced parasitism. The differences between the 

 species under review and those belonging to other 

 genera of Echiuroidea have led the authors to propose 

 a new genus, Pseudobonellia (P. biuterina, n.sp.), 

 for this remarkable worm. Various stages in para- 

 sitism in sex relationship are referred to in the paper. 

 — Dr. R. J. Tillyard : Mesozoic insects of Queensland. 

 Part V. Mecoptera, the new order Paratrichoptera, 

 and additions to the Planipennia. This part deals 

 with six specimens, of which four are named. A new 

 family, genus, and species of Mecoptera are described 

 from the Upper Trias of Ipswich, having a six- 

 branched media, but with the first cubitus cut off 

 short in a peculiar manner. Two very fine wings 

 from the same horizon belong to Trichopterous-like 

 insects, but have certain important differences in the 

 venation, viz. the anal veins primitive and separate 

 and the first cubitus without any apical fork. 

 Together with the two allied genera already described, 

 these are removed to a new order Paratrichoptera. In 

 the Planipennia the same horizon yields a portion of 

 a fine wing closely resembling that of the recent 

 Megapsychops UUdgei ; this is placed in a new genus 

 within the family Prohemerobiidae. The recent 

 Psychopsidae are shown to be the direct descendants 

 of these. Some interesting evidence is forthcoming 

 as to the nature of the vein called by Comstock the 

 "posterior arculus," which is shown almost certainly 

 to be a true posterior dichotomic branch of M, and 

 should, therefore, merit the notation M5. 



Royal Society of New South Wales, July 2. — Prof. 

 C. E. Fawsitt, president, in the chair. — Miss Mar- 

 guerite Henry : Some Australian fresh-water Copepoda 

 and Ostracoda. The present paper arose out of an 

 investigation of the transmission of worm-nodules in 

 cattle. In this investigation it was necessary to 

 examine all the Crustacea that might have acted as 

 intermediate hosts. Besides material collected at 

 Kendall, where the work was principally carried on, 

 some was collected at Lett River, Blue Mountains, 

 Waterfall, Botany, Dorrigo, Byron Bay, Casino, 

 Bangalow, Orange, Cumbalum, . and Corowa. 

 Amongst the sixteen species collected, four were found 

 to be new. — Rev. W. W. Watts : Some notes on 

 Neurosoria pteroides. Results of an investigation into 

 the structure and systematic position of a very rare 

 fern from tropical Queensland. It was first published 

 by Robert Brown as an Acrostichum, but Mettenius 

 had created for it the new genus Neurosoria. The 

 paper reviewed the work of previous students, and 

 submitted careful notes of an independent examina- 

 tion of the material available in Australia. — J. H. 

 Maiden: Notes on Eucalvptus, No. vii., with descrip- 

 tions of new species. Four species are proposed as 

 new, viz. the " Morrel " of the eastern goldfields of 

 Western Australia, which has hitherto been looked 

 unon as a large-growing form of the red mallee 

 (Eucalyptus oleosa) ; a narrow-leaved mallee from 

 NO. 2600, VOL. 103] 



Comet Vale, in the same State; a tree from Bathurst 

 Island, Northern Territory; and a mallee-like species 

 from the summit of the Barren Mountain, Bellinger- 

 Clarence district. Discovery of E. bakeri in Queens- 

 land, together with additional notes of a technical 

 character in regard to other eucalypts occurring in 

 some of the other States. 



BOOKS RECEIVED. 



The Occlusion of Gases by Metals : A General 

 Discussion held by the Faraday Society, November, 

 19 18. (Reprinted from the Transactions of the Fara- 

 day Society, vol. xiv., parts 2 and 3, 1919.) Pp. 93. 

 (London : The Faraday Society, n.d.) Ss. 6d. 



Fevers in the Tropics. By Sir Leonard Rogers. 

 Third edition. (Oxford Medical Publications.) 

 Pp. xii+404. (London : Henry Frowde and Hodder 

 and Stoughton, 1919.) 305. net. 



Menders of the Maimed : The Anatomical and 

 Physiological Principles Underlying the Treatment of 

 Injuries to Muscles, Nerves, Bones, and Joints. By 

 Prof. A. Keith. (Oxford Medical Publications.) 

 Pp. xii-f-335. (London : Henry Frowde and Hodder 

 and Stoughton, 1919.) i6s. net. 



Fossil Plants : A Text-book for Students of Botany 

 and Geology. By Prof. A. C. Seward. Vol. iv.': 

 Ginkgoales, Coniferales, Gnetales. Pp. xvi+543. 

 (Cambridge: At the University Press, 1919.) iZ. is. 

 net. 



CONTENTS. PAGE 



War Wounds. By Dr. J. le Fleming Burrow . . . 501 

 The Face of the Earth. By Prof. W. J. SoUas, 



F.R.S 502 



Physiological Chemistry. By H. H. D 504 



Our Bookshelf . . 504 



Letters to the Editor :— 



Velocity of Electric Currents.— Prof. Reginald A. 



Fessenden . . 505 



The Magnetic Storm of August II-I2, 1919. — Dr. C. 



Chree, F.R.S. ; Dr. A. Crichton Mitchell . 505 

 The James Watt Centenary Commemoration at 



Birmiv-gham 5°? 



Andrew Carnegie 507 



Walter Gould Davis. By R. C. M. . 508 



Prof. William Gilson Farlow. By F. O. B. . . . 509 



Notes 510 



Our Astronomical Column : — 



Kopff's Comet 1906 IV. = 19190; SM 



A New Comet . . . .• 5 '4 



Distribution of Globular Clusters and Spiral Nebulae . 514 



A Planet beyond Neptune 5^4- 



Photophoresis. By Robert W. Lawson 514 



Standards of Mass . 5^5 



The Folk-songs of the Teton Sioux. By Prof. G. H. 



Bryan, F.R.S. . . S^S 



Electrical Purification of Clays 516 



Evolution in Potato-Beetles 5'? 



University and Educational Intelligence 517 



Societies and Academies S'^ 



Books Received S^o 



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